Across
- 2. The smallest basic unit of a plant or an animal.
- 7. Relating to breathing respiratory.
- 9. A part of the body of an animal or plant that performs a particular job.
- 10. A group of connected cells in an animal or plant that are similar to each other, have the same purpose, and form the stated part of the animal or plant.
- 11. To produce a copy of something, or to be copied in a production process.
- 13. Relating to the system that moves blood through the body and that includes the heart, arteries, and veins.
- 14. A tube that carries blood to the heart from the other parts of the body.
Down
- 1. A multicellular organism is made of many cells.
- 3. A very thin tube that carries blood around the body.
- 4. An illness caused by infection or a failure of health rather than an accident.
- 5. The action of spreading in many directions.
- 6. A set of connected things or devices that operate together.
- 8. One of the thick tubes that carries blood from the heart to other parts of the body.
- 12. Any substance that plants or animals need in order to live and grow.
- 15. The power and ability to be physically and mentally active.